package com.qd.panda.service.card;

import com.baomidou.mybatisplus.core.conditions.query.QueryWrapper;
import com.baomidou.mybatisplus.core.metadata.IPage;
import com.baomidou.mybatisplus.extension.plugins.pagination.Page;
import com.cdqidi.constant.ConstantDto;
import com.cdqidi.db.BaseService;
import com.cdqidi.dto.CacheKey;
import com.cdqidi.excel.ExcelExport;
import com.cdqidi.excel.util.ExcelUtil;
import com.cdqidi.excel.util.ExportPage;
import com.cdqidi.exception.ApiException;
import com.cdqidi.util.RedisTemplateUtil;
import com.qd.common.panda.domain.entity.card.CardPlanRedeemCodeDTO;
import com.qd.panda.mapper.card.CardPlanRedeemCodeMapper;
import com.qd.panda.model.CardPlanRedeemCode;
import com.qd.panda.service.third.qd.PdfService;
import lombok.RequiredArgsConstructor;
import lombok.extern.slf4j.Slf4j;
import org.springframework.stereotype.Service;
import org.springframework.transaction.annotation.Transactional;
import org.springframework.util.StringUtils;

import javax.annotation.Resource;
import javax.servlet.http.HttpServletResponse;
import java.io.ByteArrayOutputStream;
import java.io.IOException;
import java.util.Arrays;
import java.util.Collections;
import java.util.List;
import java.util.Optional;

import static java.util.stream.Collectors.toList;

/**
 * 兑换码
 *
 * @author sjk
 */
@RequiredArgsConstructor
@Service
@Slf4j
public class CardPlanRedeemCodeService extends BaseService<CardPlanRedeemCodeMapper, CardPlanRedeemCode> {

    private static final String PREFIX_ID = "panda_card_plan_redeem_code_redeemCode_{0}";

    private final RedisTemplateUtil<CardPlanRedeemCode> redisTemplateUtil;
    @Resource
    private HttpServletResponse response;

    /**
     * 保存
     *
     * @param dto 页面对象
     * @return 页面对象
     */
    @Transactional(rollbackFor = Exception.class)
    public CardPlanRedeemCodeDTO save(CardPlanRedeemCodeDTO dto) {
        final CardPlanRedeemCode model = dtoToModel(dto);
        try {
            if (super.save(model)) {
                return modelToDto(model);
            }
            throw new ApiException("添加失败");
        } finally {
            clearCache(model);
            model.freeData();
        }
    }

    /**
     * 修改
     *
     * @param dto 页面对象
     * @return 页面对象
     */
    @Transactional(rollbackFor = Exception.class)
    public CardPlanRedeemCodeDTO update(CardPlanRedeemCodeDTO dto) {
        final CardPlanRedeemCode historyModel = Optional.ofNullable(getById(dto.getRedeemCode())).orElseThrow(() -> new ApiException("ID不存在,不能更新"));
        final CardPlanRedeemCode model = dtoToModel(dto);
        try {
            if (super.updateById(model)) {
                return modelToDto(model);
            }
            throw new ApiException("更新失败");
        } finally {
            clearCache(historyModel);
            historyModel.freeData();
            model.freeData();
        }
    }

    /**
     * 批量添加
     *
     * @param mList 数据库对象
     */
    @Transactional(rollbackFor = Exception.class)
    public void saveBatch(List<CardPlanRedeemCode> mList) {
        try {
            if (!super.saveBatch(mList)) {
                throw new ApiException("批量添加失败");
            }
        } finally {
            clearCaches(mList);
        }
    }

    /**
     * 批量更新
     *
     * @param mList 数据库对象
     */
    @Transactional(rollbackFor = Exception.class)
    public void updateBatchIds(List<CardPlanRedeemCode> mList) {
        final List<String> ids = mList.stream().map(CardPlanRedeemCode::getRedeemCode).collect(toList());
        final List<CardPlanRedeemCode> historyModelList = checkIds(ids);
        try {
            if (!super.updateBatchById(mList)) {
                throw new ApiException("批量更新失败");
            }
        } finally {
            clearCaches(historyModelList);
            historyModelList.clear();
            ids.clear();
        }
    }

    /**
     * 删除，单个
     *
     * @param redeemCode 主键
     */
    @Transactional(rollbackFor = Exception.class)
    public void removeById(String redeemCode) {
        final CardPlanRedeemCode historyModel = Optional.ofNullable(getById(redeemCode)).orElseThrow(() -> new ApiException("数据不存在,不能删除"));
        try {
            if (!super.removeById(redeemCode)) {
                throw new ApiException("删除失败");
            }
        } finally {
            clearCache(historyModel);
            historyModel.freeData();
        }
    }

    /**
     * 批量删除
     *
     * @param ids 主键集合
     */
    @Transactional(rollbackFor = Exception.class)
    public void removeBatchIds(List<String> ids) {
        final List<CardPlanRedeemCode> historyModelList = checkIds(ids);
        try {
            if (!super.removeByIds(ids)) {
                throw new ApiException("批量删除失败");
            }
        } finally {
            clearCaches(historyModelList);
            historyModelList.clear();
        }
    }

    /**
     * 根据传入对象构建查询参数，判断是否存在
     *
     * @param dto 参数
     * @return 存在为true
     */
    @Transactional(readOnly = true)
    public Boolean isExists(CardPlanRedeemCodeDTO dto) {
        final QueryWrapper<CardPlanRedeemCode> queryWrapper = createQueryWrapper(dto);
        final boolean exists = super.count(queryWrapper) > 0;
        queryWrapper.clear();
        return exists;
    }

    /**
     * 根据主键判断数据是否存在
     *
     * @param redeemCode 主键
     * @return 存在为true
     */
    @Transactional(readOnly = true)
    public Boolean isExistsById(String redeemCode) {
        boolean exists = false;
        if (StringUtils.hasLength(redeemCode)) {
            final CardPlanRedeemCode model = getById(redeemCode);
            exists = (null != model);
            if (exists) {
                model.freeData();
            }
        }
        return exists;
    }

    /**
     * 根据主键获取数据
     *
     * @param redeemCode 主键
     * @return 单条记录
     */
    @Transactional(readOnly = true)
    public CardPlanRedeemCode getById(String redeemCode) {
        final String key = RedisTemplateUtil.getRedisCacheKey(PREFIX_ID, redeemCode);
        return redisTemplateUtil.get(new CacheKey().setKey(key).setTimeout(ConstantDto.REDIS_TIME_OUT_DAY), () -> super.getById(redeemCode), CardPlanRedeemCode.class);
    }

    /**
     * 根据主键获取数据
     *
     * @param redeemCode 主键
     * @return 单条记录，转换成页面对象
     */
    @Transactional(readOnly = true)
    public CardPlanRedeemCodeDTO getByIdDto(String redeemCode) {
        return Optional.ofNullable(getById(redeemCode)).map(this::modelToDto).orElse(null);
    }

    /**
     * 根据条件查询单条数据
     *
     * @param dto 查询参数
     * @return 单条记录
     */
    @Transactional(readOnly = true)
    public CardPlanRedeemCode getOne(CardPlanRedeemCodeDTO dto) {
        final QueryWrapper<CardPlanRedeemCode> queryWrapper = createQueryWrapper(dto);
        CardPlanRedeemCode model = super.getOne(queryWrapper);
        queryWrapper.clear();
        return model;
    }

    /**
     * 根据条件查询单条数据
     *
     * @param dto 查询参数
     * @return 单条记录，转换成页面对象
     */
    @Transactional(readOnly = true)
    public CardPlanRedeemCodeDTO getOneDto(CardPlanRedeemCodeDTO dto) {
        return Optional.ofNullable(getOne(dto)).map(this::modelToDto).orElse(null);
    }

    /**
     * 根据条件查询列表数据
     *
     * @param dto 查询参数
     * @return 列表数据
     */
    @Transactional(readOnly = true)
    public List<CardPlanRedeemCode> getList(CardPlanRedeemCodeDTO dto) {
        final QueryWrapper<CardPlanRedeemCode> queryWrapper = createQueryWrapper(dto);
        final List<CardPlanRedeemCode> list = super.list(queryWrapper);
        queryWrapper.clear();
        return list;
    }

    /**
     * 根据条件查询列表数据
     *
     * @param dto 查询参数
     * @return 列表数据，转换成页面对象
     */
    @Transactional(readOnly = true)
    public List<CardPlanRedeemCodeDTO> getListDto(CardPlanRedeemCodeDTO dto) {
        return modelToDtoList(getList(dto));
    }

    /**
     * 分页数据
     *
     * @param page 分页对象
     * @param dto  查询参数
     * @return 分页信息
     */
    @Transactional(readOnly = true)
    public IPage<CardPlanRedeemCodeDTO> page(Page<CardPlanRedeemCode> page, CardPlanRedeemCodeDTO dto) {
        final QueryWrapper<CardPlanRedeemCode> queryWrapper = createQueryWrapper(dto, "t1.");
        final IPage<CardPlanRedeemCodeDTO> iPage = baseMapper.page(page, queryWrapper);
        queryWrapper.clear();
        return iPage;
    }

    /**
     * 导出Excel
     *
     * @param query 查询条件
     */
    @Transactional(readOnly = true)
    public void export(CardPlanRedeemCodeDTO query) {
        final ExportPage<CardPlanRedeemCode, CardPlanRedeemCodeDTO> exportPage = new ExportPage<>();
        try {
            final List<CardPlanRedeemCodeDTO> list = exportPage.getAllForPage(page -> page(page, query).getRecords());
            try {
                ExcelExport.downloadExcel(response, CardPlanRedeemCodeDTO.class, () -> list);
            } catch (IOException e) {
                log.error("导出失败", e);
                throw new ApiException("导出失败");
            }
        } finally {
            exportPage.freeData();
        }
    }

    @Transactional(readOnly = true)
    public void onlineRedeemCode(CardPlanRedeemCodeDTO query) throws IOException {
        final ExportPage<CardPlanRedeemCode, CardPlanRedeemCodeDTO> exportPage = new ExportPage<>();
        try {
            final List<CardPlanRedeemCodeDTO> list = exportPage.getAllForPage(page -> page(page, query).getRecords());
            if (list.isEmpty()) {
                return;
            }
            try (ByteArrayOutputStream byteArrayOutputStream = new ByteArrayOutputStream()) {
                String title = ExcelUtil.getTitle(CardPlanRedeemCodeDTO.class);
                ExcelExport.exportExcelToOutputStream(byteArrayOutputStream, CardPlanRedeemCodeDTO.class, () -> list, null);
//                FileUtil.writeBytes(byteArrayOutputStream.toByteArray(),new File("d://test.xlsx"));
                PdfService.onlinePdf(response, title, byteArrayOutputStream.toByteArray());
            }
        } finally {
            exportPage.freeData();
        }
    }

    /**
     * 清空缓存
     *
     * @param model 数据库对象
     */
    public void clearCache(CardPlanRedeemCode model) {
        if (null == model) {
            return;
        }
        redisTemplateUtil.deleteByKey(RedisTemplateUtil.getRedisCacheKey(PREFIX_ID, model.getRedeemCode()));
    }

    /**
     * 批量清空缓存
     *
     * @param list 数据库对象
     */
    public void clearCaches(List<CardPlanRedeemCode> list) {
        if (null == list || list.isEmpty()) {
            return;
        }
        List<String> ids = list.stream().map(model -> RedisTemplateUtil.getRedisCacheKey(PREFIX_ID, model.getRedeemCode())).collect(toList());
        if (!ids.isEmpty()) {
            redisTemplateUtil.deleteByKey(ids);
            ids.clear();
        }
    }

    /**
     * 数据库对象转页面对象
     *
     * @param model 数据库对象
     * @return 页面对象
     */
    public CardPlanRedeemCodeDTO modelToDto(CardPlanRedeemCode model) {
        if (null == model) {
            return null;
        }
        final CardPlanRedeemCodeDTO dto = new CardPlanRedeemCodeDTO();
        dto.setRedeemCode(model.getRedeemCode());
        dto.setPlanId(model.getPlanId());
        dto.setUserId(model.getUserId());
        buildDisplay(dto);
        return dto;
    }

    /**
     * 页面对象转数据库对象
     *
     * @param dto 页面对象
     * @return 数据库对象
     */
    public CardPlanRedeemCode dtoToModel(CardPlanRedeemCodeDTO dto) {
        if (null == dto) {
            return null;
        }
        final CardPlanRedeemCode model = new CardPlanRedeemCode();
        model.setRedeemCode(dto.getRedeemCode());
        model.setPlanId(dto.getPlanId());
        model.setUserId(dto.getUserId());
        return model;
    }

    /**
     * 码表转换
     *
     * @param dto 页面对象
     */
    public void buildDisplay(CardPlanRedeemCodeDTO dto) {

    }

    /**
     * 数据库对象转页面对象
     *
     * @param list 数据库对象
     * @return 页面对象
     */
    public List<CardPlanRedeemCodeDTO> modelToDtoList(List<CardPlanRedeemCode> list) {
        return Optional.ofNullable(list).orElse(Collections.emptyList()).stream().map(this::modelToDto).collect(toList());
    }

    /**
     * 页面对象转数据库对象
     *
     * @param list 页面对象
     * @return 数据库对象
     */
    public List<CardPlanRedeemCode> dtoToModelList(List<CardPlanRedeemCodeDTO> list) {
        return Optional.ofNullable(list).orElse(Collections.emptyList()).stream().map(this::dtoToModel).collect(toList());
    }

    /**
     * 拼装查询参数，除了主键的其他字段会自动加入进来
     *
     * @param dto 查询参数，不为空的属性会被自动加入
     */
    public QueryWrapper<CardPlanRedeemCode> createQueryWrapper(CardPlanRedeemCodeDTO dto) {
        return createQueryWrapper(dto, "");
    }

    /**
     * 拼装查询参数，除了主键的其他字段会自动加入进来
     *
     * @param dto        查询参数，不为空的属性会被自动加入
     * @param tableAlias 表别名
     */
    public QueryWrapper<CardPlanRedeemCode> createQueryWrapper(CardPlanRedeemCodeDTO dto, String tableAlias) {
        final QueryWrapper<CardPlanRedeemCode> queryWrapper = new QueryWrapper<>();
        if (null != dto) {
            if (StringUtils.hasLength(tableAlias) && tableAlias.charAt(tableAlias.length() - 1) != '.') {
                tableAlias += ".";
            }
            if (StringUtils.hasLength(dto.getPlanId())) {
                queryWrapper.eq(tableAlias + "plan_id", dto.getPlanId());
            }
        }
        queryWrapper.orderByAsc(tableAlias + "redeem_code");
        return queryWrapper;
    }

    /**
     * 批量检查主键在数据库中是否存在
     *
     * @param ids 主键集合
     * @return 主键查询出来的集合
     */
    public List<CardPlanRedeemCode> checkIds(List<String> ids) {
        if (null == ids || ids.isEmpty()) {
            throw new ApiException("ids不能为空");
        }
        final List<CardPlanRedeemCode> list = super.listByIds(ids);
        if (list.isEmpty()) {
            throw new ApiException("ids不存在" + Arrays.toString(ids.toArray()));
        }
        if (ids.size() == list.size()) {
            return list;
        }
        List<String> dbIds = list.stream().map(CardPlanRedeemCode::getRedeemCode).collect(toList());
        final List<String> notExistsList = ids.stream().filter(id -> !dbIds.contains(id)).collect(toList());
        dbIds.clear();
        if (!notExistsList.isEmpty()) {
            throw new ApiException("ids不存在" + Arrays.toString(notExistsList.toArray()));
        }
        return list;
    }

    @Transactional(readOnly = true)
    public List<CardPlanRedeemCode> getListByPlanId(String planId) {
        QueryWrapper<CardPlanRedeemCode> queryWrapper = new QueryWrapper<>();
        queryWrapper.eq("plan_id", planId);
        return getBaseMapper().selectList(queryWrapper);
    }

    @Transactional(rollbackFor = Exception.class)
    public void removeByPlanId(String planId) {
        List<CardPlanRedeemCode> listByPlanId = getListByPlanId(planId);
        if (!listByPlanId.isEmpty()) {
            boolean b = listByPlanId.stream().anyMatch(cardPlanRedeemCode -> StringUtils.hasLength(cardPlanRedeemCode.getUserId()));
            if (b) {
                throw new ApiException("已经有人兑换，不能删除");
            }
            List<String> ids = listByPlanId.stream().map(CardPlanRedeemCode::getRedeemCode).collect(toList());
            removeBatchIds(ids);
        }
    }
}